how to escape commas in m4?

[Fletcher Mattox]

If Iinclude these lines in site.config.m4:

APPENDDEF(`confLDOPTS', `-Wl,-rpath /lusr/opt/sasl-1.5.28/lib')
APPENDDEF(`confLDOPTS', `-L/lusr/lib')

m4 complains:

Warning: Excess arguments to built-in `define' ignored

and generats a Makefile line like this:

LDOPTS= -Wl -L/lusr/lib

i.e., it treats the comma in -Wl,-rpath as a parameter separator and
truncates everything after it. How do I make this work?

Thanks
Fletcher

[Claus Aßmann]

Post by Fletcher Mattox
i.e., it treats the comma in -Wl,-rpath as a parameter separator and
truncates everything after it. How do I make this work?

cf/README:

Remember that these options are M4 variables, and hence may need to
be quoted. In particular, arguments with commas will usually have to
be ``double quoted, like this phrase'' to avoid having the comma
confuse things. This is common for alias file definitions and for
the read timeout.